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Note 4 - Loans Receivable - PPP activity (Details) $ in Thousands	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)
Number of loans originated	11	30
Loans receivable, net of allowance for loan losses: March 31, 2021, $7,395 and December 31, 2020, $7,751	$ 1,028,840	$ 1,002,578
Paycheck Protection Program Loan Origination [Member]
Number of loans originated	193		0
Loan balance originations	$ 8,624		$ 0
Loans receivable, net of allowance for loan losses: March 31, 2021, $7,395 and December 31, 2020, $7,751	$ 7,902		0
Paycheck Protection Program CARES Act [Member]
Number of loans originated	256
Loan balance originations			290
Loans receivable, net of allowance for loan losses: March 31, 2021, $7,395 and December 31, 2020, $7,751	$ 10,902		$ 10,180

X

- Definition

Represents number of loans under financing receivable.

+ References

No definition available.

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X

- Definition

Amount of financing receivable originated in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
-Paragraph 79
-URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-Section 50
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X

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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